PCA Alerting And Dashboarding Practice Question
You are seeing 'Alerting rule evaluation error' in your logs. What is the most likely cause?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Invalid PromQL in the expression
Syntactic errors in the PromQL query within an alerting rule will cause evaluation failures.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Alertmanager is down
Why it's wrong here
If Alertmanager is down, rules are still evaluated; alerts just fail to send.
- ✗
Too many dashboards
Why it's wrong here
Dashboards have no impact on rule evaluation logic.
- ✓
Invalid PromQL in the expression
Why this is correct
Syntax errors in the query expression prevent the rule from evaluating.
- ✗
Prometheus is out of disk space
Why it's wrong here
Disk space issues cause ingestion failures, not rule evaluation errors.
About these practice questions
This PCA question is part of Courseiva's 304-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official CNCF / Linux Foundation exam blueprint
This PCA practice question is part of Courseiva's free CNCF / Linux Foundation certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCA exam.